What are the grades of a ligament sprain: Grade 1, 2, and 3?

Sports & Ligament Injuries 1 min read Updated October 3, 2026

Ligament sprains are commonly classified into Grade 1, Grade 2, and Grade 3 according to the amount of ligament damage and resulting joint instability.

Grade 1: Mild sprain

  • The ligament is stretched but remains intact.
  • Microscopic fibres may be injured.
  • Mild pain or swelling may occur.
  • The joint usually remains stable.

Grade 1 injuries are generally treated without surgery using rest, gradual movement, strengthening, and rehabilitation.

Grade 2: Partial tear

  • Part of the ligament fibres are torn.
  • Pain and swelling are usually more noticeable.
  • Some looseness or instability may be present.
  • Recovery typically requires structured rehabilitation and sometimes bracing.

Treatment depends on the ligament involved and the patient’s activity demands.

Grade 3: Complete tear

  • The ligament is completely torn or separated from its attachment.
  • Significant instability may be present.
  • Other structures in the joint may also be injured.
  • Surgery may be considered depending on the ligament, symptoms, associated injuries, and activity level.

The grade alone does not determine whether surgery is required. For example, some ligament injuries can be managed without surgery even when substantial damage is present, while an unstable knee in a competitive athlete may require a different approach.

Dr. Atul Mishra assesses the ligament involved, degree of instability, MRI findings, associated injuries, age, and activity goals before deciding on the treatment plan.

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